ASTROSAT CZTI

Data Quality Report

Orbit 26653

Creation date: 2024-06-27T19:31:25.665816
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A09_145T01_9000003848_26653cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26653cztM0_level2_quad_clean.evt
Size (bytes)672,209,28091,903,680
Size641.1 MB 87.6 MB
Events in quadrant A3,732,494596,761
Events in quadrant B5,976,428571,122
Events in quadrant C3,974,350574,176
Events in quadrant D6,181,156533,444

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154810
B0225290
C0161910
D0234190

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7286610.837222%
B728684211.556410%
C72862032.786165%
D728694112.915180%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7611 7289 0 0 0.00% 0.00%
B 7611 7289 540 540 7.09% 7.41%
C 7611 7289 56 56 0.74% 0.77%
D 7611 7289 727 727 9.55% 9.97%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 13 153142 808.08 924 906 188.4
A 13 254 12615 62.15 924 906 188.4
A 3 137 8525 40.44 924 906 188.4
B 10 245 2493875 15040.22 869 850 165.8
B 3 112 39452 232.88 869 850 165.8
B 12 111 19309 111.36 869 850 165.8
C 2 16 209855 1010.8 877 884 206.7
C 14 238 140060 673.2 877 884 206.7
C 15 208 133371 640.85 877 884 206.7
D 1 52 1798878 8001.13 842 823 224.7
D 7 80 644796 2865.6 842 823 224.7
D 12 233 190882 845.74 842 823 224.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter